On Friday 02 March 2007 13:18, Simon Ekstrand wrote: > Kern Sibbald wrote: > > On Friday 02 March 2007 00:59, Simon Ekstrand wrote: > >> Steen skrev: > > [...] > > >>> You need to set a Maximum Volume Size in order for Bacula to "rotate" > >>> or recycle volumes properly, like: > > [...] > > >> I thought that 'Maximum Volume Bytes' and 'Volume Use Duration' did the > >> exact same thing except that one limited based on size and the other on > >> a time interval, that's the way i interpret the documentation here: > >> http://www.bacula.org/rel-manual/Basic_Volume_Management.html#SECTION002 > >>611 000000000000000 > >> > >> So the way i read it setting 'Maximum Volume Bytes' wouldn't help my > >> situation. I'd be happy to be wrong though and I'll be testing it first > >> thing in the morning. > > > > I think the comments made by Steen are correct, and in principle > > (logically) what you say is correct too, but in practice, Bacula handles > > Maximum Volume Bytes rather gracefully -- it notifies all concurrent jobs > > of the volume change, whereas Volume Use Duration does not. > > > > Anyway, the best is to test it ... > > I've run multiple tests with 'Maximum Volume Bytes' set to 5 gb today > with very good results. With multiple clients running, clients started > after the first volume rotation etc. All jobs switched volume(s) without > any problems and all jobs completed successfully. Restores of the jobs > in question also worked without any problems. This also helped cut down > the restore times by alot due to the smaller volume sizes which is a big > win.
Simply as good practice, I think it is better not to have very large volumes (i.e. 5-20 GB max), but with version 2.0.x the restore time should not vary by the volume size as Bacula seeks to the correct restore address. > > It might be a good idea to document the difference between how bacula > deals with Maximum Volume Bytes and Volume Use Duration in the volume > management section of the documentation so others can avoid this issue > in the future. > > Thanks all for the quick help. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
